Oregon 78-019 Idler Pulley Outer Diameter 3"; Material Type Steel; Belt Size 1/2"; Pulley Type "V" Idler Pulley; Inner Diameter 3/8" Replaces: AYP 4827H, 53018; FMC 172-0567; John Deere AM102322, AM115682; Massey Ferguson 1040013M1; MTD 2120-84, 756-0116, 756-0116A, 756-04209, 756-04241, 756-1207; Murray 10702, 45074; Noma 10702, 45074; Toro 100335, 112-0892, 112-6133, 3-4243, 8205; Troy-Bilt 1710567, 756-1207 Fits: John Deere 108, 112, 130, 160, RX63 and SRX75-95; Walker MT and MT GHS, 20 HP